fix(leads): keep Persian digits when saving contact-form phones

Mixed Persian and Latin digits were stripped down to the Latin part, so some website leads stored a truncated mobile.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/src/contacts/normalize.ts

@@ -9,11 +9,21 @@ export function normalizeEmail(value?: string | null): string | null {
   return v ? v.toLowerCase() : null;
 }
 
+const FA_DIGITS = '۰۱۲۳۴۵۶۷۸۹';
+const AR_DIGITS = '٠١٢٣٤٥٦٧٨٩';
+
+/** ارقام فارسی و عربی را به لاتین برمی‌گرداند تا از شماره حذف نشوند. */
+function latinDigits(value: string): string {
+  return value.replace(/[۰-۹٠-٩]/g, (ch) => {
+    const fa = FA_DIGITS.indexOf(ch);
+    return String(fa >= 0 ? fa : AR_DIGITS.indexOf(ch));
+  });
+}
+
 /** Keep digits and leading + for Iranian/international numbers. */
 export function normalizePhone(value?: string | null): string | null {
   const v = emptyToNull(value);
   if (!v) return null;
-  const cleaned = v.replace(/[^\d+]/g, '');␍
+  const cleaned = latinDigits(v).replace(/[^\d+]/g, '');
   return cleaned.length ? cleaned : null;
 }
-␍